Smoke retardant vinyl halide polymer compositions

Details Smoke retardant vinyl halide polymer compositions Smoke retardant vinyl halide polymer compositions

1982-05-14

1985-03-26

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524398, 524425, 524567, C08K 509, C08K 326

Patent

active

045074143

ABSTRACT:
Vinyl halide polymer compositions containing smoke retarding amounts of copper oxalate and an amine molybdate that form a carbonaceous char on burning do not exhibit char afterglow when such compositions also contain less than 20 weight parts of a Group IIA alkaline earth metal carbonate. Improved rigid vinyl halide polymer compositions, substantially free of liquid ester type plasticizers, also containing styrene copolymer process modifiers, copolymers of ethylene and vinyl acetate and graft copolymers of methacrylates, butadiene, and styrenes (MBS) polymers, are disclosed.

REFERENCES:
patent: Re27121 (1971-04-01), Canarios
patent: 2483959 (1949-10-01), Baer
patent: 4053453 (1977-10-01), McRowe et al.
patent: 4294752 (1981-10-01), Silberberg
Charles E. Hoke, "Compounding Flame Retardance into Plastics", SPE Journal, (May 1973), vol. 29, pp. 36-40.
Lally et al., "Stabilization of Polyvinyl Chloride", Modern Plastics, (Dec. 1949), pp. 111, 112, 114, 116, 156 to 162.

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